An analysis of results of the process of automatic classification of the points cloud gained from the aerial laser scanning was presented. Research was conducted on the separated part of the area of 21.37 ha from the city Brzeg. The tested object comprised 3048246 lidar points. The automatic classification was performed with the use of the following programs: Tiltan Tlid (v. 3.21), TerraSolid (v. 011.007) and VRMesh Survey (v. 6.1).To the edition of the cloud of points an application Furgo Viewer was used.On the basis of qualitative, quantitative and visual analysis conducted on the classified cloud of points, conclusions regarding the use of exploited applications were drawn. ...
The main purpose of this work was to determine the degree of negative impact of heavy metals accumulated in the water sediments to aquatic organisms. Samples of sediments were collected in winter 2013, from 4 layers of sediment (0-5, 5-10, 10-20 and 20-30 cm) at three points along the water reservoir. Sediments were prepared for analysis in accordance with the procedures applied in soil science. The analysis was carried out for the fraction with a particle diameter less than 1 mm. The total content of such elements as Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn, was determined by atomic absorption spectrometry (using the Thermo Scientific iCE 3000 series spectrometer) after digestion in a mixture (5:1) of concentrated acid HNO3 (65 %) and HClO4 (60%). The total Hg content was obtained by using the AMA 254 analyzer. Only the lead content in the analyzed samples of bottom sediments exceeded the contamination value given by polish law (the Regulation of the Minister of Environment). According to the classification of PGI samples of sediments are classified mainly as medium polluted sediments (Class II), with the exception of zinc and lead concentrations (Class III). Due to the value of the indicator ...
